erbium
/ˈɜrbiəm/
noun
- A soft, silvery metal that is a chemical element (symbol Er). It is used in some lasers and to color glass and ceramics pink or red.
- The periodic table lists erbium with the atomic number 68.
- Erbium is added to glass to create pink or red tinted lenses.
- Doctors use erbium lasers for certain types of skin treatments.